1tpl

<table><tr><td colspan='2'>[[1tpl]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/"citrobacter_intermedium"_werkman_and_gillen_1932 "citrobacter intermedium" werkman and gillen 1932]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TPL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TPL FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Tyrosine_phenol-lyase Tyrosine phenol-lyase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.99.2 4.1.99.2] </span></td></tr>

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== Publication Abstract from PubMed ==

Tyrosine phenol-lyase (EC 4.1.99.2) from Citrobacter freundii has been cloned and the primary sequence deduced from the DNA sequence. From the BrCN digest of the NaBH4-reduced holoenzyme, five peptides were purified and sequenced. The amino acid sequences of the peptides agreed with the corresponding parts of the tyrosine phenol-lyase sequence obtained from the gene structure. K257 is the pyridoxal 5'-phosphate binding residue. Assisted by the sequence data, the crystal structure of apotyrosine phenol-lyase, a pyridoxal 5'-phosphate-dependent enzyme, has been refined to an R-factor of 16.2% at 2.3-A resolution using synchrotron radiation diffraction data. The tetrameric molecule has 222 symmetry, with one of the axes coincident with the crystallographic 2-fold symmetry axis of the crystal which belongs to the space group P2(1)2(1)2 with a = 76.0 A, b = 138.3 A, and c = 93.5 A. Each subunit comprises 14 alpha-helices and 16 beta-strands, which fold into a small and a large domain. The coenzyme-binding lysine residue is located at the interface between the large and small domains of one subunit and the large domain of a crystallographically related subunit. The fold of the large, pyridoxal 5'-phosphate binding domain and the location of the active site are similar to that found in aminotransferases. Most of the residues which participate in binding of pyridoxal 5'-phosphate in aminotransferases are conserved in the structure of tyrosine phenol-lyase. Two dimers of tyrosine phenol-lyase, each of which has a domain architecture similar to that found in aspartate aminotransferases, are bound together through a hydrophobic cluster in the center of the molecule and intertwined N-terminal arms.

Three-dimensional structure of tyrosine phenol-lyase.,Antson AA, Demidkina TV, Gollnick P, Dauter Z, von Tersch RL, Long J, Berezhnoy SN, Phillips RS, Harutyunyan EH, Wilson KS Biochemistry. 1993 Apr 27;32(16):4195-206. PMID:7916622<ref>PMID:7916622</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Citrobacter intermedium werkman and gillen 1932]]

[[Category: Antson, A]]

[[Category: Dauter, Z]]

[[Category: Demidkina, T]]

[[Category: Harutyunyan, E]]

[[Category: Wilson, K]]